Okla. Stat. tit. 25 § 19
Current through Laws 2024, c. 453.
Usage is a reasonable and lawful public custom concerning transactions of the same nature as those which are to be affected thereby, existing at the place where the obligation is to be performed, and either known to the parties, or so well established, general and uniform, that they must be presumed to have acted with reference thereto.
Okla. Stat. tit. 25, § 19